Gabriel Weinburg already tried to set this up (although more voluntarily) and you can read about it here http://www.gabrielweinberg.com/blog/2010/11/help-me-sta

Gabriel Weinburg already tried to set this up (although more voluntarily) and you can read about it here http://www.gabrielweinberg.com/blog/2010/11/help-me-start-a-foss-tithing-movement.html http://www.gabrielweinberg.com/blog/2010/11/help-me-start-a-... and http://fosstithe.org/ http://fosstithe.org/ The general idea was to tithe a certain portion of profits/revenue towards open source projects. Only a few accepted it though (myself included). Only two really seem to have made any contributions though (I would love to but not making any money yet).